today the defense is challenging a couple's testimony that they heard screams and gunshots coming from pistorius's home the night he shot his girlfriend. pistorius's next door neighbor broke down on the stand yesterday recalling the screams that she heard. >> the shots [crying] >> at one point pistorius -- you can see him as he puts his hands over his ears appearing to block out his testimony. he has pleaded not guilty. we'll keep watching this case. >>> at this hour officials are preparing for a more extensive investigation into that massive gas explosion that blew apart a condominium complex leaving one woman dead and seven others hurt. this happened in ewing, new jersey, after contractors responded to a power problem, hit a gas line. neighbors say the force from the blast felt like a bomb. >> it kind of blew me back like 10, 15 feet. it was just chaos outside. people were crying, nobody knew what was going on. >> look at that right there. this house is blown to bits. several of those homes were leveled. most of the residents forced from their homes, wouldn't be able to return until